Swing arm loading fatigue test tool

Abstract

The utility model relates to the technical field of workpiece test tools, and provides a swing arm loading fatigue test tool which comprises a first loading assembly, a lining fixing block and a second loading connecting block, the second loading connecting block is connected to the middle section of a workpiece, and the lining fixing block is rotationally connected with one end of the workpiece; the fixed seat is provided with a bolt flange plate, the other end of the workpiece is inserted into the bolt flange plate, and the bottom of the fixed seat is connected with a linear guide rail assembly; the first loading assembly is connected with the end face of one side of the fixing base so that the first loading assembly can apply pressure to a workpiece. According to the utility model, the stress of a real vehicle can be better simulated, the loading oil cylinder is protected from being damaged by deflection force, and the oil leakage condition of the oil cylinder is prevented.

Description

Technical Field

[0001] The utility model relates to the technical field of workpiece test fixtures, in particular to a swing arm loading fatigue test fixture. Background Art

[0002] The automobile swing arm is an important component of the automobile chassis suspension system, which is divided into two types: steering gear swing arm and steering knuckle swing arm. The steering gear swing arm is installed on the steering gear output shaft, and swings in a fan shape with the rotation of the steering gear output shaft. It is connected to the steering knuckle swing arm through a straight tie rod. Turning the steering wheel can drive the steering wheel to make a steering movement. The steering knuckle swing arm is installed on the steering knuckle, and a complete steering linkage structure is formed through a straight tie rod and a horizontal tie rod. It swings with the steering gear swing arm to realize the steering of the car.

[0003] The automobile swing arm is also the connecting mechanism between the frame and the wheels, which plays the role of supporting the body, reducing shock and adjusting the direction of the vehicle. If the automobile swing arm is damaged, it may lead to reduced handling and comfort, reduced safety performance, abnormal noise, inaccurate positioning parameters, deviation, and wear or damage to other parts. Therefore, the automobile swing arm is crucial to the stability and safety of vehicle driving, and fatigue testing is required for this product. However, most of the traditional fatigue test tools realize unidirectional and concentric loading, which cannot simulate the force of the actual vehicle. When conducting eccentric tests, copper sleeves or guide shafts will be installed on the cylinder to withstand another non-parallel force, which will accelerate the wear of the guide shaft and copper sleeve, resulting in a gap, and then the force will be borne by the cylinder, causing it to be damaged. Utility Model Content

[0004] The utility model aims to provide a swing arm loading fatigue test tooling which can better simulate the force of a real vehicle and protect the loading oil cylinder from being damaged by the deflection force.

[0005] The embodiment of the utility model is realized through the following technical scheme: a swing arm loading fatigue test fixture, comprising a first loading component, a bushing fixing block and a second loading connecting block, the second loading connecting block is connected to the middle section of the workpiece, the bushing fixing block is rotatably connected to one end of the workpiece; a fixed seat, a latch flange is installed on the fixed seat, the other end of the workpiece is inserted into the latch flange, and a linear guide rail component is connected to the bottom of the fixed seat; the first loading component is connected to one side end face of the fixed seat, so that the first loading component applies pressure to the workpiece.

[0006] Preferably, the first loading assembly includes a first connecting seat, a connecting rod and a second connecting seat, the first connecting seat is connected and fixed to the side end surface of the fixing seat, and the two ends of the connecting rod are rotatably connected to the first connecting seat and the second connecting seat respectively.

[0007] Preferably, the fixing seat is an L-shaped structure, and the first connecting seat and the second connecting seat are located on a horizontal line.

[0008] Preferably, the linear guide rail assembly includes a support plate, a slider, a slide rail and a base, the slide rail is installed on the base, the support plate is arranged on the lower side of the fixed seat, the upper end surface of the slider is connected and fixed to the bottom of the support plate, and the lower side of the slider is connected and cooperated with the slide rail.

[0009] Preferably, the length direction of the slide rail is consistent with the loading direction of the first loading assembly, and the slide rail is provided with at least two slide rails symmetrically distributed on both sides of the support plate.

[0010] Preferably, the second loading connection block is a U-shaped structure, and the lower end of the second loading connection block is rotatably connected to the workpiece.

[0011] Preferably, the upper end surface of the latch flange is an inclined structure.

[0012] The technical solution of the embodiments of the utility model has at least the following advantages and beneficial effects: the utility model hinges and fixes the rotating end of the swing arm at the bushing fixing block, and inserts the other end into the pin flange, and the second loading connecting block applies horizontal loading pressure to the swing arm, a part of the eccentric force is supported by the linear guide rail assembly, and the cylinder of the first loading assembly applies horizontal loading pressure to the swing arm in another direction. The entire tooling better simulates the stress conditions of the actual vehicle, and can realize both unidirectional loading and bidirectional loading, thereby avoiding damage to the cylinder by eccentric force. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying creative work.

[0014] Figure 1 A schematic diagram of the structure of a swing arm loading fatigue test tooling provided in an embodiment of the utility model;

[0015] Figure 2 Side view of the fatigue test fixture for loading the swing arm;

[0016] Figure 3 It is a schematic diagram of the exploded structure of the swing arm loading fatigue test fixture in the utility model.

[0017] Icons: 1-first loading assembly, 11-first connecting seat, 12-connecting rod, 13-second connecting seat, 2-fixed seat, 3-second loading connecting block, 4-workpiece, 5-bushing fixing block, 6-linear guide rail assembly, 61-support plate, 62-slider, 63-slide rail, 64-base, 7-latch flange. DETAILED DESCRIPTION

[0018] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Generally, the components of the embodiments of the utility model described and shown in the drawings here can be arranged and designed in various different configurations.

[0019] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the present invention to be protected, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0020] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0021] Example

[0022] The following is further described in conjunction with specific embodiments. Figure 1-Figure 3As shown, this embodiment is a swing arm loading fatigue test fixture, including a first loading component 1, a bushing fixing block 5 and a second loading connection block 3, the second loading connection block 3 is connected to the middle section of the workpiece 4, the bushing fixing block 5 is rotatably connected to one end of the workpiece 4; a fixing seat 2, a latch flange 7 is installed on the fixing seat 2, the other end of the workpiece 4 is inserted into the latch flange 7, and a linear guide assembly 6 is connected to the bottom of the fixing seat 2; the first loading component 1 is connected to one side end face of the fixing seat 2, so that the first loading component 1 applies pressure to the workpiece 4; specifically, the utility model The rotating end of the arm is hinged with the bushing fixing block 5, and the rotating column at the other end of the swing arm is inserted into the hole of the pin flange 7. The second loading connection block 3 presses downward vertically to apply pressure on the middle section of the swing arm, and the first loading component 1 applies pressure laterally on the swing arm to achieve two-way loading of the swing arm, better simulate the actual vehicle conditions, and the fatigue test is more accurate. When the first loading component 1 acts on the fixed seat 2, the fixed seat 2 can slide horizontally on the linear guide assembly 6. The support of the linear guide assembly 6 also avoids the damage to the oil cylinder of the first loading component 1 caused by the lateral force of the second loading connection block 3.

[0023] Reference Figure 2 As shown, the first loading assembly 1 in this embodiment includes a first connecting seat 11, a connecting rod 12 and a second connecting seat 13. The first connecting seat 11 is connected and fixed to the side end surface of the fixed seat 2, and the two ends of the connecting rod 12 are rotatably connected to the first connecting seat 11 and the second connecting seat 13 respectively; specifically, the first connecting seat 11 and the second connecting seat 13 both adopt fisheye connecting seats, and when the cylinder is loaded and pressurized, the force is transmitted to the connecting rod 12, the first connecting seat 11, the fixed seat 2 and the latch flange 7 through the second connecting seat 13, and the latch flange 7 directly acts on the swing arm.

[0024] Reference Figure 1 As shown, the fixing seat 2 in this embodiment is an L-shaped structure, and the first connecting seat 11 and the second connecting seat 13 are located on a horizontal line; specifically, during normal testing, the horizontal test can ensure that all the loading force acts on the fixing seat 2.

[0025] It should be noted that if Figure 3 As shown, the linear guide rail assembly 6 in this embodiment includes a support plate 61, a slider 62, a slide rail 63 and a base 64. The slide rail 63 is installed on the base 64. The support plate 61 is arranged on the lower side of the fixed seat 2. The upper end surface of the slider 62 is connected and fixed to the bottom of the support plate 61. The lower side of the slider 62 is connected and cooperated with the slide rail 63. Furthermore, the movement of the first connecting seat 11 will drive the fixed seat 2, the support plate 61 and the slider 62 to slide relative to the slide rail 63 as a whole.

[0026] In order to ensure the force-bearing shape, it is necessary to ensure that the length direction of the slide rail 63 is consistent with the loading direction of the first loading assembly 1, and the slide rail 63 is provided with at least two symmetrically distributed on both sides of the support plate 61.

[0027] In addition, the second loading connection block 3 is a U-shaped structure, and its opening size is larger than the width of the swing arm. The swing arm can be inserted into the U-shaped opening of the second loading connection block 3, so that the lower end of the second loading connection block 3 is rotatably connected to the workpiece 4.

[0028] Because one end of the swing arm is bent and tilted, in order to adapt to it, the upper end surface of the latch flange 7 is an inclined structure, which is conducive to the access of one end of the swing arm to the latch flange 7.

[0029] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may be subject to various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A swing arm loading fatigue test tool, characterized in that: It comprises a first loading assembly (1), a bushing fixing block (5) and a second loading connection block (3), wherein the second loading connection block (3) is connected to the middle section of a workpiece (4), and the bushing fixing block (5) is rotatably connected to one end of the workpiece (4); A fixed seat (2), a latch flange (7) is mounted on the fixed seat (2), the other end of the workpiece (4) is inserted into the latch flange (7), and a linear guide assembly (6) is connected to the bottom of the fixed seat (2); The first loading component (1) is connected to one end surface of the fixing seat (2), so that the first loading component (1) applies pressure to the workpiece (4).

2. The swing arm loading fatigue test fixture according to claim 1, characterized in that: The first loading assembly (1) comprises a first connecting seat (11), a connecting rod (12) and a second connecting seat (13); the first connecting seat (11) is connected and fixed to the side end surface of the fixing seat (2); and the two ends of the connecting rod (12) are rotatably connected to the first connecting seat (11) and the second connecting seat (13) respectively.

3. The swing arm loading fatigue test fixture according to claim 2, characterized in that: The fixing seat (2) is an L-shaped structure, and the first connecting seat (11) and the second connecting seat (13) are located on a horizontal line.

4. The swing arm loading fatigue test fixture according to claim 1, characterized in that: The linear guide rail assembly (6) comprises a support plate (61), a slider (62), a slide rail (63) and a base (64); the slide rail (63) is mounted on the base (64); the support plate (61) is arranged on the lower side of the fixed seat (2); the upper end surface of the slider (62) is connected and fixed to the bottom of the support plate (61); and the lower side of the slider (62) is connected and matched with the slide rail (63).

5. The swing arm loading fatigue test fixture according to claim 4, characterized in that: The length direction of the slide rail (63) is consistent with the loading direction of the first loading assembly (1), and the slide rail (63) is provided with at least two symmetrically distributed on both sides of the support plate (61).

6. The swing arm loading fatigue test fixture according to claim 1, characterized in that: The second loading connection block (3) is a U-shaped structure, and the lower end of the second loading connection block (3) is rotatably connected to the workpiece (4).

7. The swing arm loading fatigue test fixture according to claim 1, characterized in that: The upper end surface of the latch flange (7) is an inclined structure.

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